fork of https://github.com/rust-rocksdb/rust-rocksdb for nextgraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.7 KiB
58 lines
1.7 KiB
// Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
|
|
#pragma once
|
|
|
|
#include <cinttypes>
|
|
|
|
#include "rocksdb/compression_type.h"
|
|
#include "rocksdb/slice.h"
|
|
#include "rocksdb/status.h"
|
|
#include "util/autovector.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
// A read Blob request structure for use in BlobSource::MultiGetBlob and
|
|
// BlobFileReader::MultiGetBlob.
|
|
struct BlobReadRequest {
|
|
// User key to lookup the paired blob
|
|
const Slice* user_key = nullptr;
|
|
|
|
// File offset in bytes
|
|
uint64_t offset = 0;
|
|
|
|
// Length to read in bytes
|
|
size_t len = 0;
|
|
|
|
// Blob compression type
|
|
CompressionType compression = kNoCompression;
|
|
|
|
// Output parameter set by MultiGetBlob() to point to the data buffer, and
|
|
// the number of valid bytes
|
|
PinnableSlice* result = nullptr;
|
|
|
|
// Status of read
|
|
Status* status = nullptr;
|
|
|
|
BlobReadRequest(const Slice& _user_key, uint64_t _offset, size_t _len,
|
|
CompressionType _compression, PinnableSlice* _result,
|
|
Status* _status)
|
|
: user_key(&_user_key),
|
|
offset(_offset),
|
|
len(_len),
|
|
compression(_compression),
|
|
result(_result),
|
|
status(_status) {}
|
|
|
|
BlobReadRequest() = default;
|
|
BlobReadRequest(const BlobReadRequest& other) = default;
|
|
BlobReadRequest& operator=(const BlobReadRequest& other) = default;
|
|
};
|
|
|
|
using BlobFileReadRequests =
|
|
std::tuple<uint64_t /* file_number */, uint64_t /* file_size */,
|
|
autovector<BlobReadRequest>>;
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|